.NET Very simple REGEX problem

[.NET] Very simple REGEX problem - Printable Version

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+---- Thread: [.NET] Very simple REGEX problem (/showthread.php?tid=5448298)

Very simple REGEX problem - WhatIsRS - Oct 29, 2016

Need help with this string.

Pretty much I need to detect if this exact string exists, however the numbers can be anything.

How can i do this using regex? Thanks

PHP Code 


<?php 
string PageEnd = "{\"total\":335,\"items\":[]}"; 

Below doesn't work... but it's what im trying to do

PHP Code 


<?php 
Regex r = new Regex("{\"total\":" + @"^\d+$" + ",\"items\":[]}");
if (r.Match(stringImComparing).Success)
{
//do stuff
} 

Current work-around:

PHP Code 


<?php 
string PageEnd = "items\":[]}";
if (ReturnedHTML.Contains(PageEnd))
{
// Console.WriteLine("Found End Page");
MaxPage = k;
} 

* - -SomE. - Oct 29, 2016

Code 
Try

    If Regex.IsMatch( "{\""total\"":335,\""items\"":[]}", "\{\\""total\\"":[^]\n\r"",:[\\eimst}]{3},\\""items\\"":\[\]\}") Then

        ' Successful match

    Else

        ' Match attempt failed

    End If

Catch ex As ArgumentException

    'Syntax error in the regular expression

End Try

* - WhatIsRS - Oct 29, 2016

(Oct 29, 2016 05:45 PM)-SomE. Wrote:
Code
Try If Regex.IsMatch( "{\""total\"":335,\""items\"":[]}", "\{\\""total\\"":[^]\n\r"",:[\\eimst}]{3},\\""items\\"":\[\]\}") Then ' Successful match Else ' Match attempt failed End If Catch ex As ArgumentException 'Syntax error in the regular expression End Try

Thanks 👍

* - +Haze - Oct 30, 2016

This isn't a task for regex mate, use a json deserializer to check or just use string#Contains to check if the two keys exists

* - Niǌa - Oct 30, 2016

JSON deserialization would be much better. Add a reference to System.Web.Extensions and then you can use the System.Web.Script.Serialization.JavaScriptSerializer class.

* - mrkoolaid - Oct 30, 2016

pcre php regex

Code 
([{].{2}total.{2}[:]\d{3}.{3}items.{3}[[][]][}])

however i do suggest deserialization as well :)

* - Zilog80 - Oct 30, 2016

(Oct 30, 2016 09:38 AM)Niǌa Wrote: JSON deserialization would be much better. Add a reference to System.Web.Extensions and then you can use the System.Web.Script.Serialization.JavaScriptSerializer class.

Sorry for the off-topic, but I have a question:

Are there any advantages referencing to System.Web.Extensions for using System.Web.Script.Serialization.JavaScriptSerializer instead adding a reference to System.Runtime.Serialization for using System.Runtime.Serialization.Json.DataContractJsonSerializer class?

Or maybe both classes 'do the same' job? (serialize/deserialize JSON data)

PS: I've always used DataContractJsonSerializer class for JSON stuff.

* - Niǌa - Oct 31, 2016

(Oct 30, 2016 10:10 AM)Zilog80 Wrote: Sorry for the off-topic, but I have a question:

Are there any advantages referencing to System.Web.Extensions for using System.Web.Script.Serialization.JavaScriptSerializer instead adding a reference to System.Runtime.Serialization for using System.Runtime.Serialization.Json.DataContractJsonSerializer class?

Or maybe both classes 'do the same' job? (serialize/deserialize JSON data)

PS: I've always used DataContractJsonSerializer class for JSON stuff.

I haven't used the latter that much and I am more familiar with the first. As far as advantages go I have no clue.